杭州联通端口全被屏蔽

就剩25跟110端口 是开放的 ,其他从 1 到 65535 全都是封锁的

我网上抄了个 golang 程序测试的

package main import ( "flag" "fmt" "net" "runtime" "time" ) // CheckIsOpen 检查端口是否打卡 func CheckIsOpen(domain strig, timeout time.Duration, portChan chan int, exitChan chan bool, openPort []int, rescan chan int) { for { port, ok := <-portChan if !ok { break } socket := fmt.Sprintf("%v:%v", domain, port) _, err := net.DialTimeout("tcp", socket, timeout) //发起握手操作 有回应 说明打开了端口 并且做了延时 超过一定时间 直接说明未打开 defer func() { recover() }() if err == nil { rescan <- port fmt.Println(socket, " 打开") openPort = append(openPort, port) } else { //fmt.Println(socket, " 关闭") } } exitChan <- true } func main() { cores := runtime.NumCPU() runtime.GOMAXPROCS(cores - 1) domainP := flag.String("domain", "", "请输入指定的 IP 地址") flag.Parse() domain := *domainP if domain == "" { fmt.Println("请输入 IP 地址") return } openPort := make([]int, 10) exitChan := make(chan bool) portChan := make(chan int) resChan := make(chan int, 100) go func() { for i := 0; i < 65535; i++ { portChan <- i } close(portChan) //及时关闭管道 使用 for 循环取出时才不会等待 }() timeout := time.Millisecond * 200 for i := 0; i < 18; i++ { go CheckIsOpen(domain, timeout, portChan, exitChan, openPort, resChan) } for i := 0; i < 18; i++ { <-exitChan } close(exitChan) close(resChan) fmt.Println("开启的端口号:") for { port, res := <-resChan if !res { break } fmt.Println(port) } }